From fb4f2050718f2d1c819b530b46d423cf8e665e8d Mon Sep 17 00:00:00 2001 From: Martin Zobel-Helas Date: Thu, 1 Feb 2018 20:23:24 +0100 Subject: [PATCH] add documentation for removing a device from linux kernel safely Signed-off-by: Martin Zobel-Helas --- input/howto/decomission.mdwn | 29 ++++++++++++++++++++++++++++- 1 file changed, 28 insertions(+), 1 deletion(-) diff --git a/input/howto/decomission.mdwn b/input/howto/decomission.mdwn index ce2da3c..da732e5 100644 --- a/input/howto/decomission.mdwn +++ b/input/howto/decomission.mdwn @@ -28,6 +28,33 @@ rabbitmqadmin -N rainier -V dsa delete queue name=$queue done -Three months after decomissioning: + * Remove disks from the MSA + * run multipath -ll on the KVM host and find all disks on that multipath + +``` + finzi-srv (3600c0ff00027786c874edd5701000000) dm-52 HP,MSA 2040 SAN + size=75G features='2 queue_if_no_path retain_attached_hw_handler' hwhandler='0' wp=rw + |-+- policy='service-time 0' prio=50 status=active + | |- 1:0:2:4 sdeu 129:96 active ready running + | |- 1:0:3:4 sdhu 134:64 active ready running + | |- 2:0:0:4 sdaa 65:160 active ready running + | `- 2:0:2:4 sdfz 131:80 active ready running + `-+- policy='service-time 0' prio=10 status=enabled + |- 1:0:0:4 sdf 8:80 active ready running + |- 1:0:1:4 sdbu 68:128 active ready running + |- 2:0:1:4 sdcz 70:112 active ready running + `- 2:0:3:4 sdja 8:320 active ready running + +``` + * for each disk in those multipath run + + echo 1 > /sys/block/sdX/device/delete + + * once done, remove that multpath-device from multipath + + multipath -f finzi-srv + + * remove the paths in the MSA +Three months after decomissioning: * Remove backups -- 2.20.1